JPS6138000B2 - - Google Patents
Info
- Publication number
- JPS6138000B2 JPS6138000B2 JP57030541A JP3054182A JPS6138000B2 JP S6138000 B2 JPS6138000 B2 JP S6138000B2 JP 57030541 A JP57030541 A JP 57030541A JP 3054182 A JP3054182 A JP 3054182A JP S6138000 B2 JPS6138000 B2 JP S6138000B2
- Authority
- JP
- Japan
- Prior art keywords
- aeration device
- impeller
- liquid
- flow path
- aeration
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
Links
- 238000005273 aeration Methods 0.000 claims description 23
- 239000007788 liquid Substances 0.000 claims description 13
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims description 3
- 239000007789 gas Substances 0.000 claims description 3
- 239000001301 oxygen Substances 0.000 claims description 3
- 229910052760 oxygen Inorganic materials 0.000 claims description 3
- 230000004323 axial length Effects 0.000 claims description 2
- 239000007787 solid Substances 0.000 description 12
- 239000002023 wood Substances 0.000 description 4
- 239000010865 sewage Substances 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 1
- 238000007373 indentation Methods 0.000 description 1
- 239000002351 wastewater Substances 0.000 description 1
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W10/00—Technologies for wastewater treatment
- Y02W10/10—Biological treatment of water, waste water, or sewage
Landscapes
- Aeration Devices For Treatment Of Activated Polluted Sludge (AREA)
Description
【発明の詳細な説明】
本発明は内側ケーシングおよび外側ケーシング
の間に被処理液体の流路が形成され、その流路に
酸素含有気体が被処理液体へ噴射され、その流路
には被処理液体を送る羽根車が設けられている曝
気装置に関する。DETAILED DESCRIPTION OF THE INVENTION According to the present invention, a flow path for a liquid to be treated is formed between an inner casing and an outer casing, an oxygen-containing gas is injected into the flow path, and a flow path for a liquid to be treated is formed between an inner casing and an outer casing. It relates to an aeration device that is provided with an impeller for transporting a liquid.
かかる曝気装置は種々知られており、例えば第
１図に示す典型的な従来の曝気装置Ｂは、駆動部
Ａとケーシング部Ｃとから構成され、そして吊り
金具１を介して鎖２で全体が吊られ、曝気槽の底
面に設置使用されるようになつている。このよう
に曝気装置Ｂは液体中で使用されるため、駆動部
Ａのモータは水中モータ５が用いられ、羽根車４
が伝動部３を介して水中モータ５で回転駆動され
るようになつている。ケーシング部Ｃは内側ケー
シング６と内側ケーシング７とから成つていて、
これら両ケーシング６，７の間には流路８が形成
されている。これらの両ケーシング６，７は下方
へラツパ状に拡径されている。 Various such aeration devices are known. For example, a typical conventional aeration device B shown in FIG. It is now used by hanging it and installing it on the bottom of the aeration tank. Since the aeration device B is used in liquid in this way, the submersible motor 5 is used as the motor of the drive unit A, and the impeller 4
is rotated by an underwater motor 5 via a transmission part 3. The casing part C consists of an inner casing 6 and an inner casing 7,
A flow path 8 is formed between these two casings 6 and 7. Both of these casings 6, 7 are expanded downward in diameter in a tapered manner.
このように構成されている曝気装置Ｂは、水中
モータ５が起動されると、羽根車４が回転駆動さ
れ、被処理液体は流路８の上方の吸込口９から吸
込まれ、そして、半径外方へ吐出口１０から吐出
されるようになつている。そして流路８には適数
の散気管１１が突出し、供給管１２から供給され
る酸素含有気体例えば空気は環状の集合管１３を
介して散気管１１から被処理液体中へ噴射される
ようになつている。 In the aeration device B configured in this way, when the submersible motor 5 is started, the impeller 4 is driven to rotate, and the liquid to be treated is sucked in from the suction port 9 above the flow path 8. The liquid is ejected from the ejection port 10 in the direction shown in FIG. An appropriate number of aeration tubes 11 protrude from the flow path 8, so that oxygen-containing gas, such as air, supplied from the supply tube 12 is injected from the aeration tube 11 into the liquid to be treated via an annular collecting tube 13. It's summery.
ところで、このような構造を有する従来の曝気
装置では、曝気槽特に下水処理のための曝気槽で
は、種々の固形物が下水とともに流入するので、
羽根車４にはこれらの固形物が付着して運転上し
ばしばトラブルが発生する。とりわけ木片のよう
な固形物が羽根車４と外側ケーシング７との間隙
にかみ込まれると、水中モータ５の消費動力が増
大し、ときにはモータ定格動力を超過し、水中モ
ータ５がストツプすることもある。 By the way, in conventional aeration equipment having such a structure, various solid substances flow into the aeration tank, especially in the aeration tank for sewage treatment, along with the sewage.
These solid substances adhere to the impeller 4 and often cause operational troubles. In particular, if a solid object such as a piece of wood gets caught in the gap between the impeller 4 and the outer casing 7, the power consumption of the submersible motor 5 increases, sometimes exceeding the motor's rated power, and the submersible motor 5 may stop. be.
したがつて本発明の目的は、曝気装置において
羽根車への固形物の付着を減少させ、特に固形物
が羽根車とケーシングとの間にかみ込まれること
を防止できる曝気装置を提供するにある。 SUMMARY OF THE INVENTION Accordingly, an object of the present invention is to provide an aeration device that can reduce the adhesion of solid matter to an impeller, and in particular can prevent solid matter from being caught between the impeller and the casing. .
本発明によれば、被処理液体の流路に配置され
た羽根車に相対する部分の外側ケーシングに単数
または複数個のくぼみを設けてある。したがつて
木片等の固形物はそのくぼみに達すると流出する
ことができる。 According to the present invention, one or more depressions are provided in the outer casing at a portion facing the impeller disposed in the flow path of the liquid to be treated. Solids such as wood chips can therefore flow out once they reach the recess.
以下第２図および第３図を参照して本発明の実
施例を説明する。第２図および第３図において、
第１図に示した従来の曝気装置の構成要素と同じ
構成要素には同じ参照符号を付して示すものとす
る。 Embodiments of the present invention will be described below with reference to FIGS. 2 and 3. In Figures 2 and 3,
Components that are the same as those of the conventional aeration device shown in FIG. 1 are designated with the same reference numerals.
被処理液体が流れる流路８には羽根車４が配置
され、該流路８の上端には吸込口９が形成されて
いる点は従来例と同じである。本発明によれば第
２図および第３図に示すように羽根車４に相対す
る部分すなわち羽根車４の半径方向外方の外側ケ
ーシング７に単数または複数個のくぼみ１４が設
けられている。このくぼみ１４は羽根車先端隙間
１５にかみ込まれた固形物Ｅを流しおとすため、
軸方向には羽根先端部の軸方向長さに等しいか、
またはそれを越え、幅Ｗは100〜150mm、深さD20
mm以下のほぼぼ長方形に形成されている。このよ
うに構成させることにより木片等の固形物が外側
ケーシング７と羽根車４の羽根の外周との隙間１
５にたとえくい込んでも、くい込んだ羽根がくぼ
み１４に到達すると、固形物は羽根から流しおと
され、羽根車は安定して運転を続けることが可能
となる。くぼみと外側ケーシング内面との角Ｆは
ほぼ直角の角して形成することは曝気装置として
運転上有利である。このように構成すればくぼみ
内に流しおとされた固形物が再び羽根先端隙間１
５にくい込まれるのを防ぐことができる。 An impeller 4 is disposed in a channel 8 through which the liquid to be treated flows, and a suction port 9 is formed at the upper end of the channel 8, as in the conventional example. According to the invention, as shown in FIGS. 2 and 3, one or more recesses 14 are provided in the portion of the outer casing 7 facing the impeller 4, that is, radially outward of the impeller 4. This depression 14 is designed to flush out the solid matter E caught in the impeller tip gap 15.
In the axial direction, it is equal to the axial length of the blade tip, or
or beyond that, width W is 100-150mm, depth D20
It is formed into a nearly rectangular shape of less than mm. With this configuration, solid objects such as wood chips can be trapped in the gap 1 between the outer casing 7 and the outer periphery of the blades of the impeller 4.
5, when the wedged blade reaches the recess 14, the solid matter is flushed away from the blade, allowing the impeller to continue operating stably. It is advantageous for the operation of the aeration device to form the angle F between the recess and the inner surface of the outer casing at a substantially right angle. With this configuration, the solid matter that has flowed into the recess will be returned to the blade tip gap 1.
5. It can prevent being trapped.
本発明に係る曝気装置は以上のように構成され
ており、水中モータ５が起動されると、前述の如
く被処理液体である汚水は浄化処理されるが、本
発明によると、羽根車に相対する部分の外側ケー
シングにくぼみ１４が形成されているので、外側
ケーシングの内側に沿つて流れる木片のような固
形物は、たとえ羽根先端隙間１５にくい込まれて
も、くぼみ１４に到達すればたちまち流しおとさ
れて、連続して外側ケーシング７と羽根車の羽根
の外周との間には固形物がくい込むようなことが
ない。したがつて曝気装置はモータトリツプを生
ずることもなく、安定して連続作動させることが
でき、曝気装置の信頼性を著しく向上させること
ができる。 The aeration device according to the present invention is configured as described above, and when the submersible motor 5 is started, the waste water that is the liquid to be treated is purified as described above. Since a recess 14 is formed in the outer casing at the part where the outer casing flows, even if solid objects such as pieces of wood flowing along the inside of the outer casing get stuck in the blade tip gap 15, they will be immediately washed away when they reach the recess 14. There is no possibility that solid matter will continue to get stuck between the outer casing 7 and the outer periphery of the impeller blades. Therefore, the aeration device can be stably and continuously operated without causing any motor trips, and the reliability of the aeration device can be significantly improved.
第１図は従来の曝気装置と一部断面に示す側面
図、第２図は本発明の一実施例を示す第１図を同
様な側面図、第３図は第２図における−断面
図である。
４……羽根車、６……内側ケーシング、７……
外側ケーシング、８……流路、９……吸込口、１
４……くぼみ。
Fig. 1 is a side view showing a conventional aeration device with a partial cross section, Fig. 2 is a side view similar to Fig. 1 showing an embodiment of the present invention, and Fig. 3 is a cross-sectional view of Fig. be. 4... Impeller, 6... Inner casing, 7...
Outer casing, 8...Flow path, 9...Suction port, 1
4...Indentation.
Claims (1)
の流路が形成され、その流路で酸素含有気体で被
処理液体へ噴射され、その流路には被処理液体を
送る羽根車が設けられている曝気装置において、
羽根車に相対する部分の外側ケーシングに単数ま
たは複数個のくぼみを設けたことを特徴とする曝
気装置。 ２ 上記くぼみが軸方向には羽根先端部の軸方向
長さに等しいかまたはそれを越える長さを有し、
幅は100〜150mm、深さは20mm以下のほぼ長方形で
あることを特徴とする特許請求の範囲第１項記載
の曝気装置。 ３ くぼみの縁がほぼ直角の角を有することを特
徴とする特許請求の範囲第１項又は第２項記載の
曝気装置。[Claims] 1. A flow path for the liquid to be treated is formed between the inner and outer casings, an oxygen-containing gas is injected into the liquid in the flow path, and a blade for sending the liquid to be treated is provided in the flow path. In the aeration system in which the car is installed,
An aeration device characterized in that one or more recesses are provided in the outer casing of the portion facing the impeller. 2. The recess has a length in the axial direction that is equal to or exceeds the axial length of the tip of the blade,
2. The aeration device according to claim 1, wherein the aeration device has a substantially rectangular shape with a width of 100 to 150 mm and a depth of 20 mm or less. 3. The aeration device according to claim 1 or 2, wherein the edge of the depression has an approximately right angle.
Priority Applications (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP57030541A JPS58223492A (en) | 1982-03-01 | 1982-03-01 | Aerator |
| US06/393,723 US4512936A (en) | 1981-07-03 | 1982-06-30 | Aeration apparatus |
| KR8202973A KR850001349B1 (en) | 1981-07-03 | 1982-07-03 | Aerator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP57030541A JPS58223492A (en) | 1982-03-01 | 1982-03-01 | Aerator |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS58223492A JPS58223492A (en) | 1983-12-26 |
| JPS6138000B2 true JPS6138000B2 (en) | 1986-08-27 |
Family
ID=12306650
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP57030541A Granted JPS58223492A (en) | 1981-07-03 | 1982-03-01 | Aerator |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS58223492A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6394800U (en) * | 1986-12-12 | 1988-06-18 | ||
| WO1996037444A1 (en) * | 1995-05-23 | 1996-11-28 | Ebara Corporation | Method of aerobically treating wastewater and treatment tank |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100899379B1 (en) * | 2008-09-26 | 2009-05-26 | 주식회사 유천엔바이로 | Aerator |
-
1982
- 1982-03-01 JP JP57030541A patent/JPS58223492A/en active Granted
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6394800U (en) * | 1986-12-12 | 1988-06-18 | ||
| WO1996037444A1 (en) * | 1995-05-23 | 1996-11-28 | Ebara Corporation | Method of aerobically treating wastewater and treatment tank |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS58223492A (en) | 1983-12-26 |
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